In troubleshooting RFoG and PON FTTx systems, what is a common cause of higher losses?

Higher losses in RFoG (Radio Frequency over Glass) and PON (Passive Optical Network) FTTx (Fiber to the x) systems are often caused by macro-bends and micro-bends in optical fibers. These bends occur when fiber cables are twisted, looped, or subject to sharp angles, which can lead to signal loss.

Macro-bends are large, noticeable bends in the fiber, while micro-bends are smaller, more subtle disruptions that can occur due to pressure or physical stress on the fiber. Both types of bends can cause light to escape from the fiber core, resulting in increased attenuation and weakened signal strength. This is particularly critical in high-speed data transmission systems, where maintaining signal integrity is essential for performance.

While factors like faulty connectors, electrical interference, and inadequate power supply can contribute to system issues, the specific nature of optical fiber transmission makes it particularly sensitive to bending. Therefore, recognizing and mitigating the effects of these bends is essential for ensuring optimal performance in RFoG and PON FTTx systems.